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If f(x) = sin³x – cos(2x), then the value of $f (\frac{π}{2})$ is :

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Correct option is B

sinπ2=1 and cos2π2=-1 fπ2=13--1=2

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If f(x) = sin3x – cos(2x), then the value of fπ2 is :

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Ready to Test Your Skills?

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If f(x) = sin³x – cos(2x), then the value of $f (\frac{π}{2})$ is :